#  一个列表比如[2,3,6,3,67,8,45,3,5,67,11],找出最大值并打印
l1 = [2,3,6,3,67,8,45,3,5,67,11]
t = 0 # 最大值
a = 0
while a<len(l1):
    if l1[a]>t:
        t=l1[a]
    a+=1
print(t)